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Heat sensitive paper
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Patent number 4,870,049
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Issue date Sep 26, 1989
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Sharp Kabushiki Kaisha
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Yoichi Yamamoto
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Thermosensitive recording material
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Patent number 4,824,822
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Issue date Apr 25, 1989
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Sharp Kabushiki Kaisha
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Yoichi Yamamoto
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Heat-sensitive recording material
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Patent number 4,746,645
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Issue date May 24, 1988
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Kanzaki Paper Manufacturing Company, Limited
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Teijiro Kitao
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS